( b ) Find an equation of the line that passes through A and B. What are the intercepts?

( c ) Find the midpoint of the segment AB.

( d ) Find the length of the segment AB.
( e ) Find an equation of the perpendicular bisector of AB.
( f ) Find and equation of the circle for which AB is a diameter.
5. Sketch the region in the xy-plane defined by the equation or inequalities.
(a) -1 leslant y leslant 3
( b ) absolute value of x less than 4 and absolute value of y less than 2.
( c ) Do not appear in the exam complete.
( d ) Do not appear in the exam complete.
( e ) Do not appear in the exam complete.
( f ) 9x^2 + 16y^2 = 144